I went to the Aspire Lounge at Heathrow T3 several weeks ago, and have pretty mixed feelings. The lounge is quite small and a lot of the seating (particularly the comfortable seating!) is reserved for travelers on specific airlines, most travelers not using those airlines have to make do with communal bench seating (similar to Wagamama’s restaurant). However there’s a reasonable selection of hot food, drinks (including alcohol) although I was a little disappointed that there wasn’t the standard array of cheese/crackers that most lounges have - just a tiny bit of unpackaged cheese and cream crackers. Also, there wasn’t anything sweet available to eat. Summary - not bad, but I’ve been in better airport lounges for sure.